Window cleaner&#39;s anchorage



Feb. 23, 1937.

G. F, MINNIS, JR

WINDOW CLEANER S ANCHORAGE Filed NOV. 12, 1934 @Y we@ fe/m1,@

` HIS ATTORNEYS Patented Feb. 23, 1937 z r UNITED sTaTes PATENT OFFiCE 3 Claims.

.A My inventionrelates to Safety devices for windowgcleaners, and has among its objects and advantages the provision of improved anchorage.

In Athe accompanying drawing: 5 Fig. 1 is a perspective view of a portion of a window frame illustrating my invention applied thereto;

Fig. 2 is a sectional View along the line 2 2 of Fig. 1; lo Fig. 3 is a sectional View along the line 3 3 of.

Fig. 2;

Fig. 4 is a perspective View of a conventional anchor and my improved anchoring bolt;

Fig. 5 is a perspective View of a dierent form i5 of conventional anchor sho-wing another form of my anchoring bolt; and

Fig. 6 is a sectional view along the line 6 6 of Fig. 5.

In the embodiment selected to illustrate my o invention, I make use of a building wall |53 with which a Conventional window frame i2 is associated. Upon each side I` the Window I mount a conventional window cleaners anchor i4 comprising a plate iii and a pair of spaced integral 3.3 heads i8. The plate I6 is provided with prongs 2D arranged to bury into the wood of the frame l2 when drawn thereagainst by means of the bolt 22.

Referring to Fig. 2, the bolt 22 is imbedded in :io the frame i2 and firmly secured therein by means of a nut 24. Heretofore the anchors i4 have been secured to the frame i2 by carriage bolts. My invention comprises the provision of a safety head on the bolt 22 co-operating with the heads :1.7 i8 for connection with a conventional safety belt terminal 2S. My bolt is provided with a reach 28 rectangular in cross section and corresponding to the rectangular reach of an ordinary carriage bolt, which reach lies within the rectangular lo opening 30 in the plate I6 and co-operating therewith to prevent rotation of the bolt when the nut 2li is tightened. In addition to the rectangular reach 28, I provide a rectangular reach 32 somewhat larger than the reach 28, whereby l a shoulder is provided for bearing against the plate i6, as indicated at 34 in Fig. 2, when the nut 24 is tightened. I provide a head 36 in addition to the rectangular part 32, which head is of a size and shape corresponding to the heads l2 50 and arranged in alignment therewith.

In Figs. 2 and 6, the safety belt terminal 26 comprises in part two spaced flanges 38 arranged to pass underneath the heads I8 and 36 by an endwise movement of the terminal. Such ter- 55 minals are usually provided with a spring 40 having an end 42 bent to abut one of the heads i8 for latching the terminal to the anchor. The ar- Y rangement of the head Se is such that accommodation is provided for the end i2 in the same Way as in the absence of the head.

In the past, many accidents have occurred because of defective anchors. Many plates i6 have been broken transversely in alignment withthe opening 30. Such a break leaves no anchorage for the belt terminal 2t associated therewith. The conventional carriage bolt connection provides no anchorage for the terminal 26 other than as a means for clamping the plate I6 to the frame l2. In connection with belt terminals of the type illustrated an enormous leverage is applied to the lower head i3 when a heavy weight pulls on the window cleaners belt i4 connected with the terminal through the medium of the eyelet 36. This leverage is transmitted to the plate i5 and is concentrated along the transverse line above mentioned in alignment with the opening 3B. When one anchor breaks a window cleaner is apt to fall, which falling frequently results in fatal injury to the window cleaner.

Because of my construction, complete safety is attained because of the fact that the terminal 26 is connected directly with the bolt 22 through the medium .of its head 3G. Regardless of what happens to the anchor I4, the terminal 2S will remain connected with the head 36. The anchor bolt 22 is safe because of. its rm anchorage in the window frame I2 and because of its enormous tensile strength.

My invention is applicable to conventional anchors and belt terminals and may be associated with the anchor before or after installation. The bolt may easily be substituted for the conventional carriage bolt in buildings already equipped and the single bolt simplifies the work of installation, in addition to eliminating the necessity for boring special holes and making other special connections.

In Figs. 5 and 6, I illustrate a slightly different form of construction designed for use in connection with anchors 4S having heads 50 offset with respect to the vertical central axis of the plate part 52. In some installations it is necessary to use anchors of this type to provide the necessary accommodation for the terminal 26 because of structural obstructions. The bolt 54 embodies a conventional rectangular reach 55 lying within the rectangular opening in the plate 52 and has a large head 58 arranged to bear against the plate 52 by pressing the plate against its associated window frame. I provide the head 58 with an integral neck 60 terminating in an integral head 62. The neck 60 and the head 62 are offset with respect to the axis of the bolt 54 to align the head 62 with the heads 50 in the same way as the head 36 aligns with the heads I8.

Without further elaboration, the foregoing Will so fully explain my invention that others may, by applying current knowledge, readily adapt the same for use under various conditions of SeI'VlCe.

I claim:

1. In combination with a window cleaners anchor comprising a plate having spaced heads for connection with a belt terminal, said plate having an opening arranged in a line drawn centrally through the heads, and an anchor bolt passing through said opening, said anchor bolt being provided with a head corresponding to said heads and having a second head arranged to bear against said plate or clamping the same to a supporting structure, the two heads associated with the bolt being connected together by a neck, and said spaced heads and one of the heads associated with the bolt being arranged in alignment for connection with a belt terminal.v

2. Window cleaners equipment comprising a plate having two spaced heads for connection with a belt terminal, said plate being provided with an opening between the spaced heads and the latter being positioned to one side of the plate, an anchoring bolt passing through said opening and having a head bearing against said plate, and a safety head carried by they head on the bolt and positioned to one side of the head for alignment and co-operation with said spaced heads.

3. Window cleaners equipment comprising a plate having two spaced heads, an anchoring bolt passing through said plate and having a head positioned between said two heads, a belt terminal including spaced iianges arranged to be positoned underneath the three heads, and a latch member carried by said belt terminal and having an end shaped to be positioned between the third head and one of said tWo heads for latching relation with the latter.

GEORGE F'. MIN'N'IS, JR. 

